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package com.taobao.android.builder.tasks.app.manifest;

import com.android.build.gradle.internal.api.AppVariantContext;
import com.android.build.gradle.internal.api.AppVariantOutputContext;
import com.android.build.gradle.internal.core.GradleVariantConfiguration;
import com.android.build.gradle.internal.scope.VariantScope;
import com.android.build.gradle.internal.variant.BaseVariantOutputData;
import com.android.build.gradle.tasks.ManifestProcessorTask;
import com.android.build.gradle.tasks.MergeManifests;
import com.android.builder.model.AndroidLibrary;
import com.google.common.collect.Sets;
import com.taobao.android.builder.AtlasBuildContext;
import com.taobao.android.builder.dependency.AndroidDependencyTree;
import com.taobao.android.builder.extension.AtlasExtension;
import com.taobao.android.builder.tasks.manager.MtlBaseTaskAction;
import com.taobao.android.builder.tools.bundleinfo.BundleInfoUtils;
import com.taobao.android.builder.tools.concurrent.ExecutorServicesHelper;
import com.taobao.android.builder.tools.manifest.ManifestDependencyUtil;
import com.taobao.android.builder.tools.manifest.ManifestFileObject;
import com.taobao.android.builder.tools.manifest.ManifestFileUtils;

import org.dom4j.DocumentException;
import org.gradle.api.DefaultTask;
import org.gradle.api.GradleException;
import org.gradle.api.tasks.InputFile;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.StopExecutionException;
import org.gradle.api.tasks.TaskAction;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * 对manifest文件进行预处理的任务
 * <p>
 * 1. 搜集bundleInfo
 * 2. 去除 application 信息
 * 3. 统一 use-sdk
 * 4. 补全 className
 * <p>
 * Created by shenghua.nish on 2016-05-09 下午11:31.
 */
public class PreProcessManifestTask extends DefaultTask {

    /**
     * 要合并的主manifest文件
     */
    File mainManifestFile;

    List<File> libraryManifests;

    AppVariantOutputContext.AppBuildInfo appBuildInfo;

    AppVariantContext appVariantContext;

    AppVariantOutputContext appVariantOutputContext;

    @InputFile
    public File getMainManifestFile() {
        return mainManifestFile;
    }

    public void setMainManifestFile(File mainManifestFile) {
        this.mainManifestFile = mainManifestFile;
    }

    @InputFiles
    public List<File> getLibraryManifests() {
        return libraryManifests;
    }

    public void setLibraryManifests(List<File> libraryManifests) {
        this.libraryManifests = libraryManifests;
    }

    @TaskAction
    public void preProcess() throws IOException, DocumentException, InterruptedException {

        getLogger().info("[MTLPlugin]Start PreProcess Lib manifest files,main manifestFile is:" +
                                 getMainManifestFile());

        ExecutorServicesHelper executorServicesHelper = new ExecutorServicesHelper("preProcessDex",
                                                                                   getLogger(),
                                                                                   0);
        List<Runnable> runnables = new ArrayList<>();

        ManifestFileObject mainManifestFileObject = ManifestFileUtils.getManifestFileObject(
                mainManifestFile);
        mainManifestFileObject.init();

        for (File file : getLibraryManifests()) {
            runnables.add(new Runnable() {
                @Override
                public void run() {
                    try {
                        ManifestFileUtils.updatePreProcessManifestFile(file,
                                                                       mainManifestFileObject,
                                                                       true);
                    } catch (Throwable e) {
                        throw new GradleException("preprocess manifest", e);
                    }
                }
            });
        }
        executorServicesHelper.execute(runnables);

        //ManifestFileUtils.preProcessManifests(getMainManifestFile(), getLibraryManifests(), true);

        //BundleInfoUtils.setupAwbBundleInfos(appVariantOutputContext.getVariantContext());
        //collectBundleInfo();

        addAwbManifest2Merge();
    }

    private void addAwbManifest2Merge() {
        AtlasExtension atlasExtension = appVariantContext.getAtlasExtension();

        for (final BaseVariantOutputData vod : appVariantContext.getVariantData().getOutputs()) {

            ManifestProcessorTask manifestProcessorTask = vod.manifestProcessorTask;

            Set<String> notMergedArtifacts = Sets.newHashSet();

            if (null != atlasExtension.getManifestOptions() &&
                    null != atlasExtension.getManifestOptions().getNotMergedBundles()) {
                notMergedArtifacts = atlasExtension.getManifestOptions().getNotMergedBundles();
            }

            if (manifestProcessorTask instanceof MergeManifests) {
                MergeManifests mergeManifests = (MergeManifests) manifestProcessorTask;
                VariantScope variantScope = appVariantContext.getScope();
                GradleVariantConfiguration config = variantScope.getVariantConfiguration();
                AndroidDependencyTree dependencyTree = AtlasBuildContext.androidDependencyTrees.get(
                        config.getFullName());
                if (null == dependencyTree) {
                    throw new StopExecutionException("DependencyTree cannot be null!");
                }

                List<? extends AndroidLibrary> awbManifests = ManifestDependencyUtil.getManifestDependencies(
                        dependencyTree.getAwbBundles(),
                        notMergedArtifacts,
                        getLogger());
                for (AndroidLibrary manifest : awbManifests) {
                    getLogger().info("[MTLPlugin]Add manifest:" +
                                             manifest.getName() +
                                             ",path is:" +
                                             manifest.getManifest().getAbsolutePath());
                }

                //FIXME 不加这一步,每次的getibraries 都会从mapping里去重新计算
                mergeManifests.setLibraries(mergeManifests.getLibraries());
                mergeManifests.getLibraries().addAll(awbManifests);
            }
        }
    }

    public static class ConfigAction extends MtlBaseTaskAction<PreProcessManifestTask> {

        private final AppVariantContext appVariantContext;

        public ConfigAction(AppVariantContext variantContext,
                            BaseVariantOutputData baseVariantOutputData) {
            super(variantContext, baseVariantOutputData);
            this.appVariantContext = variantContext;
        }

        @Override
        public String getName() {
            return appVariantContext.getScope().getTaskName("preProcess", "Manifest");
        }

        @Override
        public Class<PreProcessManifestTask> getType() {
            return PreProcessManifestTask.class;
        }

        @Override
        public void execute(PreProcessManifestTask task) {
            VariantScope variantScope = appVariantContext.getScope();
            final GradleVariantConfiguration config = variantScope.getVariantConfiguration();
            AndroidDependencyTree dependencyTree = AtlasBuildContext.androidDependencyTrees.get(
                    config.getFullName());
            if (null == dependencyTree) {
                throw new StopExecutionException("DependencyTree cannot be null!");
            }
            task.setMainManifestFile(config.getMainManifest());

            Set<File> libManifests = new HashSet<File>();
            for (AndroidLibrary manifestDependency : dependencyTree.getMainApkManifestDependencies()) {
                libManifests.add(manifestDependency.getManifest());
            }
            addManifest(dependencyTree.getAwbManifestDependencies().values(), libManifests);
            List<File> manifests = new ArrayList<File>(libManifests.size());
            for (File f : libManifests) {
                manifests.add(f);
            }

            task.setLibraryManifests(manifests);

            task.appBuildInfo = getAppVariantOutputContext().appBuildInfo;
            task.appVariantContext = appVariantContext;
            task.appVariantOutputContext = getAppVariantOutputContext();
        }

        private void addManifest(Collection<? extends AndroidLibrary> collection,
                                 Set<File> libManifests) {
            for (AndroidLibrary manifestDependency : collection) {
                libManifests.add(manifestDependency.getManifest());
                if (null != manifestDependency.getLibraryDependencies() &&
                        manifestDependency.getLibraryDependencies().size() > 0) {
                    addManifest(manifestDependency.getLibraryDependencies(), libManifests);
                }
            }
        }
    }
}
